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H. s. osBoRN. Rning Casi iron. No.58'2,43,5. 'Patented Sept. 22, 1868.

N. PETERS. Prmmnogmpmn wnshingm, 0.a

HENRY S. O'SBORN, Oli-EASTON, PENNSYLVANIA.

Letters Patent No. 82,435, dated September 22, 1868.

IMPROVEMENT IN RBPINING GAST IRON @te Segnale referrer tu in tlgrstlatttts atrnt tut making ma mf tige tame.

TO ALL WHOM IT MAY'CONGERN:

Be it known that I, HENRY S. OsBonN, of Easton` in the county ofNorthampton, and State of Pennsylvania, have invented a new and usefulMachine for Refining Melted Cast Iron in the process generally calledpuddling, by means of`a selfgenerating steam rabble or iron bar takingtbe place of the instrument commonly called the rabble, in refining ironin the refinery or paddling-furnace ;'and I do hereby declare that thefollowing is a full, clear, and exact description of the constructionand operation of thesame, reference being had to the annexed drawings,making a part of this specification, in which- Figure l represents avertical-section of the instrument in its position as being-used'by `theWorkman, and

Figure 2 is the same instrument, as looked down upon from above, or insome degree a plan of. the same.

In iig. 1, B is the iron box, of strong wrought iron, cylindrical insbape,'witl1 two Wrought-iron heads, onev into'nhich the solid handle AA screws, and the other into which the curved rabble-.end D A screws, asin the ligure. The latter, or curved rabble-end of the instrument, has athread' chased in that end entering the steam-box, sethat a small tube,also of wrought iron, maybe sci-ewedintoit, which smaller tube passesdirectly into the steam-box, and reaches to the supply-hole at C, fig.1, to preventwaterfrom passing down to the bar-end D. l I l xB zrepresents the-height of water when using the instrument.

Fig. 2 represents the instrument as seen from above, or as looked downupon. In this the form of the end D D is plainly seen with theperforations. These perforations may be of any number, such that whenthe steam is generated at full pressure it may be delivered under apressure ofl not muchmore than ten to fifteen pounds to the inch, as, byexperiments, it is found to be most effective at that pressure or less.This crosspiece must be plain and smooth, and screwed on, or so fastenedas to allow of being easily disengaged in the usuallway, by a ,tapfrom asmall hammer, from any slag or cirnier which may cling to it. l

The workman introduces the rabble, just before needing to puddle,(regulating the time by experience,)'

and, Whenthe proper time arrivesintroduces into the molten iron the end-D D, fig. 2, and, when the steam Y is freely passing out, draws itbackward and forward and around until he sees that the iron showsdecided signs of coming to nature, always remembering that the end, D,is never to be submerged under the liquid slag and molten material untilthe steam is passing out from D D freely.

A heat, which, with the ordinary rabble, requires twenty-five minut-s,will generally be suiciently d'ecarbonized in less than seven minutes,and the mass more thoroughly treated, and will make JLiner and moresolidgrained iron.'

4What I claim, isl p i The self-generating steam-rabble, or the rabblein which the steam is generated'by the Vheat surrounding the rabble,inthe manner and for the purposes substantially as above described.

i i HENRY S. OSBORN.

'Witnesses WILLIAM YOUNG, G. W. STOUT.

